And action... Provocative Amanda Seyfried makes her debut as 70s porn star in first look of Lovelace

Ahead of its debut at the 29th annual Sundance Film Festival, it's set to be the most provocative motion picture released this year.

And if the first look at Lovelace is anything to go by the Rob Epstein and Jeffrey Friedman screenplay will have audiences gripped.

The still which shows Amanda Seyfried, 27, who takes on the role of American porn star Linda Lovelace, on her knees as she readies another day on the set of her 1972 film Deep Throat.

Risqué: A new still for biopic Lovelace has been released which shows Amanda Seyfried, who plays porn star Linda Lovelace, on her knees during a scene for the 1972 film Deep Throat

Adam Brody, 33, who plays fellow pornographic actor Harry Reems, is seen sitting in a chair with his trousers undone as Seyfried gazes up at him.

Wide-eyed Amanda appears to be a little apprehensive in the shot published by Entertainment Weekly as she wears her hair in big curls with an animal print top.

Watching on from behind the camera, co-stars Chris Noth, Hank Azaria, Bobby Cannavale and can also be seen in the background of the frame.

Iconic role: Seyfried bagged the leading role in the film in which she stars alongside Petter Sarsgaard

That 70s style: Lovelace will chart the troubled relationship Linda had with husband Chuck Traynor

Speaking about her portrayal of the biopic, Amanda revealed to Vanity Fair the hilarious technicalities involved in mastering certain sex scenes with her Lovelace co-star Peter Sarsgaard, who plays her on-screen husband and manager Chuck Traynor.

The Les Miserable star said: 'We were doing a scene where I was supposed to be going down on Peter Sarsgaard, we used a popsicle, and I had my arms covering the popsicle.

'It was footage that he was going to show the Deep Throat guy, to get her into the movie, to get her cast.'

Last January Demi Moore was cast as Gloria Steinem in the film but dropped out of production prior to her stint in rehab.

As a result, Moore was replaced by Sex and the City star Sarah Jessica Parker.

Kate Hudson was originally asked to play Linda until it was announced last November that Seyfried was up for the role.

The film, which is yet to get an official release date, will chart the troubled relationship the
Deep Throat star had with pornographer Traynor, she later blamed him for
coercing her into the sex movie industry.

The 1972 film Deep Throat was widely regarded as
the first porn movie with an actual plot - Lovelace later alleged Traynor had forced her to do the film at gunpoint.

She further alleged he would beat her
during their three year marriage in the early Seventies and force her
into having sex with other men.